NodeList に map メソッドがない(call の使い方) - Qiita<!DOCTYPE html> <html> <head> <meta charset="utf-8" /> <title>call sample</title> <script type="text/javascript"> addEventListener('DOMContentLoaded', function () { var elms = document.querySelectorAll('tr>td:nth-child(2)'); var names = Array.prototype.map.call(elms, function (elm) { return elm.firstChild.data; }); console.log(names); }); </script> </head> <body> <table> <tr> <th>作家名 <th>作家名読み <tr
